Solved: Equation 29-4 gives the magnitude B of the
Chapter 29, Problem 14(choose chapter or problem)
Equation 29-4 gives the magnitude B of the magnetic field set up Fig. 29-43 13 and 17. by a current in an infinitely long straight wire, at a point P at perpendicular distance R from the wire. Suppose that point P is actually at perpendicular distance R from the midpoint of a wire with a finite length L. Using Eq. 29-4 to calculate B then results in a certain percentage error. What value must the ratio LlR exceed if the percentage error is to be less than 1.00%? That is, what LlR gives (B from Eq. 29-4) - (B actual) (100%) = 1.00%? (B actual)
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